I bought these shoes in a big kid 6...I'm a 7.5-8 for a woman's size. They're about 1-2 inches shorter than the adult ones, but I think the diameter is tighter around the calf which I do like. I'm about 5'6", pretty fit, and they don't look weird on me despite the shaft being a bit shorter than the woman's version of the shoe.
They're just as comfy as the usual uggs with cute buttons along the side :)
Every year I buy a pair of for my daughter. This year she decided on the three button gray boots and they're absolutely adorable. I like them so much for my daughter, I purchased a pair for myself.